Yes, but only in limited circumstances. In California, Welf. & Inst. Code § 207.1 provides that a minor may not be knowingly detained in a jail or lockup unless another law permits it, with short holds, generally up to six hours, allowed in a law enforcement facility on listed conditions. A held minor is generally placed in juvenile hall, and adult confinement can become possible if a judge transfers the case to adult court. Rules differ by state.
The words people use, such as jail, juvie and booked, can blur together. This page separates them, walks through each step from arrest to record sealing, and uses California's juvenile law as the worked example, saying plainly each time a rule is California's.
What 'Jail' Means for a Minor: Juvenile Hall vs. Adult Jail
Juvenile hall, also called a juvenile detention center, is a secure facility for minors that is kept separate from adult jails and prisons. When a minor is held after an arrest, juvenile hall is generally where that happens.
Juvenile court is its own legal system, with its own words for each step. A petition is the document that formally starts a case against a minor, in place of an adult criminal complaint. The adjudication, which California calls a jurisdiction hearing, is the hearing where the court decides whether the allegations are true. The disposition is what the court orders afterward. A minor the court takes under its ongoing authority becomes a ward of the court. Probation is supervision in the community, and diversion is a way to resolve a case without a petition or before adjudication.
Adult jail or prison generally comes into the picture when a case leaves juvenile court through a transfer hearing, covered below; in California, § 207.1 also allows the limited short holds described above. Terminology and rules vary by state, so this page describes how the system generally works and cites California law where a specific rule matters.
How Old Does a Child Have to Be to Be Detained?
The minimum age for juvenile court varies by state, and there is no single age that applies everywhere.
California's rule on which minors fall within the juvenile court's jurisdiction is in Welf. & Inst. Code § 602. Generally, and subject to the transfer rules in § 707, a minor who was between 12 and 17 years old, inclusive, when he or she violated a state or federal law, or a city or county ordinance defining a crime (other than an age-based curfew), is within the juvenile court's jurisdiction. A child under 12 is within that jurisdiction only for these alleged offenses: murder, and rape, sodomy, oral copulation or sexual penetration committed by force, violence, duress, menace, or fear of immediate and unlawful bodily injury.
Being detained means being held, for example in juvenile hall, before the case is decided. It is not a finding that the child did anything.
What Happens After a Minor Is Arrested: From Arrest to Detention Hearing
After an arrest in California, an officer may release the minor, refer the minor to a program, give the minor or a parent or guardian a written notice to appear before the probation officer, or take the minor without unnecessary delay before the probation officer (Welf. & Inst. Code § 626). The probation officer then decides whether the child stays. Under Welf. & Inst. Code § 628, the probation officer must immediately investigate and immediately release the minor to a parent, legal guardian or responsible relative, unless continuing in the home is contrary to the minor's welfare and at least one condition exists: detention is a matter of immediate and urgent necessity to protect the minor, or reasonably necessary to protect another person or property; the minor is likely to flee; or the minor violated a juvenile court order.
Welf. & Inst. Code § 631 generally requires release within 48 hours, excluding nonjudicial days, unless a petition has been filed in that time (or a criminal complaint, in a case filed in adult court). Under § 632, a detained minor must generally be brought before a judge or referee as soon as possible, and before the end of the next judicial day after the petition is filed, for a detention hearing: the court date that decides whether the child stays held. A separate rule in § 632(b), with its own conditions, covers some arrests without a warrant for a misdemeanor that does not involve violence, a threat of violence, or possession or use of a weapon. A minor not brought to court in time must be released.
At that hearing, Welf. & Inst. Code § 635 directs the court to release the minor unless the minor violated a court order, escaped a commitment, needs detention for the urgent protection of the minor or the protection of others or property, or is likely to flee; the court must also release the minor unless a prima facie showing places the minor within the court's jurisdiction. Under § 636, a court that orders detention, finding home contrary to the minor's welfare, may hold the minor for up to 15 judicial days. Home supervision, release home under conditions and possibly with electronic monitoring, is the alternative the statute names. More detail is in the guide to the juvenile detention hearing.
Questioning has its own rule. Under Welf. & Inst. Code § 625.6, before a custodial interrogation and before any waiver of Miranda rights, a youth 17 or younger must consult with a lawyer in person, by phone or by video, and that consultation cannot be waived. Under subdivision (c), the section does not apply to the admissibility of statements if the officer reasonably believed the information sought was necessary to protect life or property from an imminent threat and the questions were limited to those reasonably necessary to obtain that information. The broader juvenile arrest process follows these steps.
When a Juvenile Case Can Move to Adult Court
A transfer hearing is where a judge decides whether a minor's case leaves juvenile court for adult criminal court. If it does and the minor is convicted there, adult jail or prison becomes possible.
California's rule is Welf. & Inst. Code § 707. The district attorney or other prosecuting officer may move to transfer a minor alleged to have committed, at 16 or older, an offense listed in § 707(b) or any other felony. A motion is also allowed for an individual who was 14 or 15 when allegedly committing a § 707(b) offense but was not apprehended before juvenile court jurisdiction ended. The motion must be made before jeopardy attaches. The court then orders a probation report on the minor's behavioral patterns and social history, including any victim statement. To transfer, the court must find by clear and convincing evidence that the minor is not amenable to rehabilitation under juvenile court jurisdiction, considering criteria the statute lists. Age thresholds, eligible offenses and required findings differ by state.
Disposition: What a Juvenile Court Can Order Instead of Detention
Disposition is the juvenile court's order after adjudication. It comes only after the adjudication, or jurisdiction hearing, finds the allegations in the petition true.
Not every case reaches that point. Diversion can resolve a case before or instead of adjudication, on conditions that depend on the program. In California, Welf. & Inst. Code § 786.5 refers to diversion or supervision programs a probation officer or prosecutor may use in place of filing a petition, including informal supervision under § 654. Eligibility depends on the offense, the minor's history and the jurisdiction.
When a case does reach disposition, the court may make the minor a ward of the court. Probation lets the minor live in the community under court-set conditions, and later juvenile probation violations are handled in their own proceedings. Another option is commitment to a secure youth facility. In California, the Division of Juvenile Justice no longer operates, and commitment to a secure youth treatment facility is available only on conditions the statute sets, which this page does not cover.
How long a minor can be held or committed depends on state law, the offense and the minor's age; there is no single maximum. The juvenile disposition hearing guide covers this stage step by step.
Juvenile Records: What Sealing Means and When It Applies
Juvenile records are generally not public the way adult criminal records are, but they are not automatically erased, and they do not disappear at 18. Sealing is a legal process that restricts access to a record, and eligibility, timing and effect vary by state.
California has several routes. Under Welf. & Inst. Code § 781, a person or the county probation officer may petition to seal records five years or more after juvenile court jurisdiction ends, five years or more after contact with probation or law enforcement if no petition was filed, or at any time after the person turns 18. If, after a hearing, the court finds that since jurisdiction ended the person has not been convicted of a felony or of any misdemeanor involving moral turpitude and that rehabilitation has been attained to the court's satisfaction, it orders the records sealed. Exceptions apply: a petition to seal a record of a § 707(b) offense committed after the person turned 14 that resulted in wardship may be filed only after the person has reached 18 (or, in the circumstance the section describes, 21) and completed probation supervision, and such a record is not sealed if the person is required to register under Penal Code § 290.008.
Under § 786(a), when a person who has been alleged or found to be a ward satisfactorily completes informal supervision under § 654.2, probation under § 725, or a term of probation for any offense, the court orders the petition dismissed and the records sealed, and the arrest and proceedings are then deemed not to have occurred, so the person may reply accordingly to inquiries from employers, educational institutions and others. Satisfactory completion is defined in § 786(c). Under § 786(d), a court does not seal a record or dismiss a petition under this section if the petition was sustained for a § 707(b) offense committed at 14 or older, unless that finding was dismissed or reduced to a misdemeanor or to a lesser offense not listed in § 707(b). A sealed record can still be accessed in the limited circumstances § 786(g) lists. Under § 786.5, the probation department must seal records after satisfactory completion of a diversion or supervision program used in place of a petition. Under § 787, sealed records may still be accessed for limited data reporting and court-authorized research, without release of personally identifying information.
Consequences for school, employment and immigration can follow a juvenile case and depend on the facts and on rules this page does not cover. Immigration consequences are governed by immigration law this page does not cover.
Is Juvenile Hall Like Jail? What Detention Actually Looks Like
Juvenile hall is locked, and the young people held there cannot leave freely. In California, Welf. & Inst. Code § 207.1(f) provides that no part of a building or complex that contains a jail may be used as a secure juvenile facility unless all of its criteria are met, including that the juvenile facility is physically or architecturally separate from the jail so there could be no contact between juveniles and incarcerated adults, and that it has dedicated and separate staff.
For a parent whose child is inside one tonight, the practical point is the one the detention statutes make: in California, detention is reviewed quickly at a hearing, and release home, including home supervision, is the outcome the law starts from unless the court makes the findings described above. The broader picture of California juvenile defense shows how each of these stages fits together.
If You'd Like to Talk Through Your Child's Case
Whether a child goes home, stays in juvenile hall or faces a transfer motion turns on details: the charge in the petition, whether the child is detained right now, the date of the next hearing and the stage the case has reached. This page explains how the system generally works; it does not address any particular child's case or the rules of every state.
To request a consultation about a child's juvenile case, contact Juvenile Justice Defense Group.